Find the equation for the parabola that has its vertex at the origin and the focal point is 314 units above the directrix. equation is

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Find the equation for the parabola that has its vertex at the origin and the focal point is 314 units above the directrix. equation is_____

Guest Jun 13, 2015

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Best Answer

This one has a focal length of 314/2 = 157

and it i concave up since the directrix is below the vertex.

so $$a=157$$

$$\\x^2=4ay\\\\
x^2=4*157y\\\\
x^2=628y$$

Melody Jun 13, 2015

Melody · Answer 1 · 2015-06-13T12:33:33

This one has a focal length of 314/2 = 157

and it i concave up since the directrix is below the vertex.

so $$a=157$$

$$\\x^2=4ay\\\\
x^2=4*157y\\\\
x^2=628y$$